Regional variations in abrupt-change sequence of georesistivity and its application in earthquake prediction |
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Authors: | Xin-Heng Liu and Yun-Sheng Zhou |
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Institution: | (1) Seismological Bureau of Yunnan Province, 650041 Kuniming, China |
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Abstract: | Based on fracture mechanics, large amount of practically observed data is analyzed in this paper, and it is disclosed that
seismically-anomalous earthquake resistivity sudden change sequence can be observed at the earth resistivity stations around
the epicenter of a strong event. The maximum sudden change in the sequence tends to shift backward with the increase of epicentral
distance, while it shifts forward with the increase of the magnitude of the earthquake. The maximum sudden change also expands
from the epicenter to the peripheral areas. Therefore, the authors propose that it might be possible to predict the 3 key
elements of a forthcoming earthquake by using the sudden change sequence, the frequency of the sudden change, the expansion
velocity of the maximum sudden change and the time-distance product.
The Chinese version of this paper appeared in the Chinese edition ofActa Seismologica Sinica,15, 176–185, 1993. |
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Keywords: | rock fracture sudden change of earth resistivity frequency of the sudden change expansion velocity 3 key elements of earthquake |
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